S-92198A110 1/4"-28 x 1 1/4" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction, ideal for harsh industrial environments.
• High tensile strength of 80,000 psi ensures reliable performance under significant mechanical stress.
• Class 2A thread fit provides consistent, precise engagement for secure fastening in critical assemblies.
• Fine thread spacing (UNF) offers improved vibration resistance and finer adjustment capabilities.
• External hex drive and hex head design allows for easy installation and high torque application with standard tools.
• Partial threading enables better clamp-up on materials where unthreaded shank strength is advantageous.
• Compliance with ASME B18.2.1, RoHS 3, and REACH guarantees adherence to industry standards and environmental regulations.

Professional Applications & Engineering Value

These 1/4"-28 UNF hex head screws are engineered to address common industrial challenges such as vibration loosening, corrosion, and the need for high-strength fastening. The 18-8 stainless steel material provides excellent resistance to rust and oxidation, making them suitable for outdoor, marine, and chemical processing equipment. The fine thread spacing and Class 2A thread fit ensure tight, reliable connections that maintain integrity under dynamic loads. With an external hex drive, installation is straightforward, reducing assembly time in manufacturing, machinery, and structural applications where durability and precision are paramount.

Specification Summary & Compliance

This product features a Class 2A thread fit per UNF standards, with a thread size of 1/4"-28 and fine thread spacing. It is manufactured to meet ASME B18.2.1 specifications, ensuring dimensional accuracy and performance reliability. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), it adheres to environmental and safety regulations, making it a responsible choice for global industrial supply chains.